Hey there,
I am seeing a bug on the Kerbonaut hiring screen - I believe this is the TRP-Hire screen included inside MKS.
If I go to hire a new kerbal it subtracts the funds, sets the level of all current kerbals to zero and no kerbal is added.
It is not possible to exit the hire screen once inside - clicking leave will make other mods show up (e.g. the alarmclock) over the hire screen.
It used to work, this is a new thing that has shown up recently - first manifested itself as I went to do bulk hiring of kerbal (2+).
Have done some searching but have not been able to find any mention of anything similar.